DETERMINATION OF POLYPHENOL CONTENTS IN Hevea brasiliensis AND RUBBER-PROCESSING EFFLUENT

doi:10.17576/mjas-2018-2202-03

Cited by 3 publications

(2 citation statements)

References 40 publications

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“…Interestingly, woody plants like the rubber trees are also rich with valuable properties that are scarcely explored. In addition to highly sought‐after rubber elastomer, the latex produced by the rubber tree also contains a high amount of protein and secondary metabolites in its serum layer (Habib et al, 2016; Ismun et al, 2018). Interestingly, a C‐serum from the fresh latex of rubber trees was proven effective against R. microporus , attributed to the phenolic content in the serum (Mubarak et al, 2018).…”

Section: Control and Management Of White Root Rot Disease In Rubbermentioning

confidence: 99%

Rigidoporus microporus and the white root rot disease of rubber

2023

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The rubber tree, Hevea brasiliensis (Willd. ex A. Juss.) Mull. Arg., is one of the most economically important industrial crops, producing the milky latex which is the source of the valuable global commodity natural rubber. Natural rubber provides a source of income for rural communities, especially in Southeast Asia (Singh et al., 2021;Vongkhamheng et al., 2016). Due to the high demand globally for rubber, the area of rubber plantations worldwide increased gradually from 3 million ha in 1961 to 12 million ha in 2019 (FAO 2022).Approximately 90% of global rubber production is dominated by smallholders and planted in monoculture (IRSG, International Rubber Study Group, 2019). A rubber small-holding is defined as contiguous or non-contiguous areas aggregating less than 40.47 hectares (100 acres) planted with the crop (Saufe & Man, 2017). 2021) reported that 96% of rubber production yields are explained by independent variables comprising labour, plantation area, weeding and other cultivation activities by the smallholders. Ramli et al. (In addition, the income of the smallholder farmers also determines rubber production at the local scale, where low profitability leads to reduced tapping activities and even abandonment of farms (Ali et al., 2021). The conversion of primary and secondary forests to rubber monoculture decreases species richness and impacts overall species composition (Gitz et al., 2020). The introduction of this monoculture to new ecosystems has also led to the spread of nonnative pathogens and diseases (Monkai et al., 2017). Arguably, the most economically important rubber disease is white root rot (WRR) disease.

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Section: Control and Management Of White Root Rot Disease In Rubbermentioning

confidence: 99%

Rigidoporus microporus and the white root rot disease of rubber

2023

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“…The presence of those phenolics is inversely correlated with the acceptability of sweet potato by weevils [30], which supports the anti-herbivore latex function. Different polyphenol compounds were identified in latex of H. brasiliensis, namely gallic acid, naphthoic acid, quercetin, chlorogenic acid, and rutin, which are also postulated to play a role in plant defense system [31]. In common dandelion (Taraxacum officinale F.H.…”

Section: Main Components Of Latex-secondary Metabolitesmentioning

confidence: 99%

Functional Studies of Plant Latex as a Rich Source of Bioactive Compounds: Focus on Proteins and Alkaloids

Gracz-Bernaciak

Mazur

Nawrot

2021

IJMS

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Latex, a sticky emulsion produced by specialized cells called laticifers, is a crucial part of a plant’s defense system against herbivory and pathogens. It consists of a broad spectrum of active compounds, which are beneficial not only for plants, but for human health as well, enough to mention the use of morphine or codeine from poppy latex. Here, we reviewed latex’s general role in plant physiology and the significance of particular compounds (alkaloids and proteins) to its defense system with the example of Chelidonium majus L. from the poppy family. We further attempt to present latex chemicals used so far in medicine and then focus on functional studies of proteins and other compounds with potential pharmacological activities using modern techniques such as CRISPR/Cas9 gene editing. Despite the centuries-old tradition of using latex-bearing plants in therapies, there are still a lot of promising molecules waiting to be explored.

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Plant Latex, from Ecological Interests to Bioactive Chemical Resources

2019

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Historically, latex-bearing plants have been regarded as important medicinal resources in many countries due to their characteristic latex ingredients. They have also often been endowed with a social or cultural significance in religious or cult rituals or for hunting. Initial chemical studies focused on the protein or peptide content but recently the interest extended to smaller molecules. Latex has been found to contain a broad range of specialized metabolites such as terpenoids, cardenolides, alkaloids, and phenolics, which are partly responsible for their antibacterial, antifungal, anthelmintic, cytotoxic, and insect-repellent activities. The diversity in biology and chemistry of latexes is supposedly associated to their ecological roles in interactions with exogenous factors. Latexes contain unique compounds that are different to those found in their bearing plants. Exploring the feasibility of plant latex as a new type of bioactive chemical resource, this review paper covers the chemical characterization of plant latexes, extending this to various other plant exudates. Also, the factors influencing this chemical differentiation and the production, transportation, and chemistry of the latex exudates are described, based on ecological and biochemical mechanisms. We also proposed a latex coagulation model involving 4 general conserved steps. Therefore, the inherent defensive origin of latexes is recognized as their most valuable character and encourages one to pay attention to these materials as alternative sources to discover metabolites with insecticidal or antimicrobial activity.

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DETERMINATION OF POLYPHENOL CONTENTS IN Hevea brasiliensis AND RUBBER-PROCESSING EFFLUENT

Cited by 3 publications

References 40 publications

Rigidoporus microporus and the white root rot disease of rubber

Rigidoporus microporus and the white root rot disease of rubber

Functional Studies of Plant Latex as a Rich Source of Bioactive Compounds: Focus on Proteins and Alkaloids

Plant Latex, from Ecological Interests to Bioactive Chemical Resources

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